In this tutorial, you will learn how to find the maximum value in a group using the SQL MAX aggregate function.

Group rows and apply an aggregate function to each group: SELECT column1, aggregate_fn (column2) FROM table_name GROUP BY column1; Code language: SQL (Structured Query …

You'll learn how to use the SQL LPAD function to pad a specified set of characters on the left of a string to a certain length.

Section 1. Introduction to SQL What is SQL – Understands SQL and its popular dialects. SQL Syntax – Explores the basic SQL syntax.

In this syntax: First, specify the left table in the FROM clause (left_table) Second, provide the right table you want to merge rows with the left table in the LEFT JOIN clause (right_table). Third, …

The following example uses an inner join to merge rows from the employees and departments tables in the sample database: Note that these tables are different from the employees and …

In this syntax: The SELECT clause can accept a single value, which can be a column or an expression. The FROM and INNER JOIN clauses can accept a result set such as a table. The …

Jan 20, 2025 · This tutorial shows you how to use the SQL CURRENT_DATE function to get the current date of the database server.

SQL AGGREGATE FUNCTIONS AVG returns the average of a list COUNT returns the number of elements of a list SUM returns the total of a list MAX returns the maximum value in a list MIN …

SQL Playground is a free and interactive tool to practice SQL statements online.